diff --git a/server/routes/agent_routes.ts b/server/routes/agent_routes.ts
index 2d351145..c8a9f3eb 100644
--- a/server/routes/agent_routes.ts
+++ b/server/routes/agent_routes.ts
@@ -39,7 +39,7 @@ export function registerAgentRoutes(router: IRouter, assistantService: Assistant
         );
         return res.ok({ body: response });
       } catch (e) {
-        context.assistant_plugin.logger.debug('Execute agent failed!', e);
+        context.assistant_plugin.logger.error('Execute agent failed!', e);
         if (e.statusCode >= 400 && e.statusCode <= 499) {
           return res.customError({
             body: e.body,
diff --git a/server/routes/summary_routes.ts b/server/routes/summary_routes.ts
index 8c8fc3e2..df093512 100644
--- a/server/routes/summary_routes.ts
+++ b/server/routes/summary_routes.ts
@@ -58,11 +58,20 @@ export function registerSummaryAssistantRoutes(
           topNLogPatternData: req.body.topNLogPatternData,
         });
       } catch (e) {
-        return res.customError({
-          body: e.body || 'execute agent failed',
-          statusCode: e.statusCode || 500,
-          headers: e.headers,
-        });
+        context.assistant_plugin.logger.error('Execute agent failed!', e);
+        if (e.statusCode >= 400 && e.statusCode <= 499) {
+          return res.customError({
+            body: e.body,
+            statusCode: e.statusCode,
+            headers: e.headers,
+          });
+        } else {
+          return res.customError({
+            body: 'Execute agent failed!',
+            statusCode: 500,
+            headers: e.headers,
+          });
+        }
       }
 
       let summary;
@@ -126,11 +135,20 @@ export function registerSummaryAssistantRoutes(
           question: req.body.question,
         });
       } catch (e) {
-        return res.customError({
-          body: e.body || 'execute agent failed',
-          statusCode: e.statusCode || 500,
-          headers: e.headers,
-        });
+        context.assistant_plugin.logger.error('Execute agent failed!', e);
+        if (e.statusCode >= 400 && e.statusCode <= 499) {
+          return res.customError({
+            body: e.body,
+            statusCode: e.statusCode,
+            headers: e.headers,
+          });
+        } else {
+          return res.customError({
+            body: 'Execute agent failed!',
+            statusCode: 500,
+            headers: e.headers,
+          });
+        }
       }
 
       try {
@@ -191,11 +209,20 @@ export function registerData2SummaryRoutes(
         const result = response.body.inference_results[0].output[0].result;
         return res.ok({ body: result });
       } catch (e) {
-        return res.customError({
-          body: e.body || 'execute agent failed',
-          statusCode: e.statusCode || 500,
-          headers: e.headers,
-        });
+        context.assistant_plugin.logger.error('Execute agent failed!', e);
+        if (e.statusCode >= 400 && e.statusCode <= 499) {
+          return res.customError({
+            body: e.body,
+            statusCode: e.statusCode,
+            headers: e.headers,
+          });
+        } else {
+          return res.customError({
+            body: 'Execute agent failed!',
+            statusCode: 500,
+            headers: e.headers,
+          });
+        }
       }
     })
   );
diff --git a/server/routes/text2viz_routes.ts b/server/routes/text2viz_routes.ts
index c038546a..0b7c61f6 100644
--- a/server/routes/text2viz_routes.ts
+++ b/server/routes/text2viz_routes.ts
@@ -119,11 +119,20 @@ export function registerText2VizRoutes(router: IRouter, assistantService: Assist
         const result = JSON.parse(response.body.inference_results[0].output[0].result);
         return res.ok({ body: result });
       } catch (e) {
-        return res.customError({
-          body: e.body || 'execute agent failed',
-          statusCode: e.statusCode || 500,
-          headers: e.headers,
-        });
+        context.assistant_plugin.logger.error('Execute agent failed!', e);
+        if (e.statusCode >= 400 && e.statusCode <= 499) {
+          return res.customError({
+            body: e.body,
+            statusCode: e.statusCode,
+            headers: e.headers,
+          });
+        } else {
+          return res.customError({
+            body: 'Execute agent failed!',
+            statusCode: 500,
+            headers: e.headers,
+          });
+        }
       }
     })
   );